I am using regular DN32 PP pipe, into this pipe I inserted custom designed part to hold bearing type 608 in place. All parts are fiting into each other tightly so bearing is nicely rolling.
You have to use vise to push bearing into printed part.
Then you can use regular M8 bolts instead of printed part. Printed bolts can handle 1 Kg filaments spool easily
The pipe with filament spool is removeable from the hanger easily.
Base has to be attached to ceiling of the box by screws or you can use it as a stand-then you have to tighten the nuts holding to the stand.
2 Kg spool can also fit in.
The author marked this model as their own original creation.